World There’s a 50-50 chance Earth will reach critical climate change mark within 5 years, report says May 10, 2022 Doyle Rice, USA TODAY Comments Off on There’s a 50-50 chance Earth will reach critical climate change mark within 5 years, report says There's a 48% chance that the globe will reach a yearly average of 1.5 degrees Celsius above pre-industrial levels thanks to climate change.